feat(react-x): add 'no-unused-props' rule

[ulrichstark]

What kind of change does this PR introduce?

• Bugfix
• Feature
• Docs
• Test
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• I have added a convincing reason for adding this feature, if necessary

Other information

A pull request of a TypeScript type only version no-unused-prop-types is welcome.
#85 (comment)

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[ulrichstark]

Hey @Rel1cx, I'm already making better progress than expected on this rule. As you can see, four basic invalid and four basic valid tests are already passing. Before continuing I wanted to confirm that the direction I'm going matches your expectation of this rule.

The most important question right now is if I should count prop keys as used if they are destructered/accessed from the props object, but NOT used after that (in JSX for example). I would decide for no, because that case is already covered by https://eslint.org/docs/latest/rules/no-unused-vars. See my valid tests for reference. They currently pass because destructuring from the props object is enough to be counted as used.

Some other decisions I made so far:

• Rule features are TSC and EXP
• Added my rule to all and x config
• Added my rule to recommended config, but commented out

If you notice anything incorrect in my current changes, feel free to point that out or change it to your desire.

[Rel1cx]

I would decide for no, because that case is already covered by https://eslint.org/docs/latest/rules/no-unused-vars

You are right. This aligns with our philosophy: Each rule should have a single purpose. Make multiple rules work together to achieve more complex behaviors.

So far so good, Thanks for the amazing work!

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Name	Status	Preview	Comments	Updated (UTC)
eslint-react	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 25, 2025 3:50am